Improvement in door-checks



UNITED STATES PATENT OFFICE.

CHARLES S. WHIPPLE, OF NEW LONDON, CONNECTICUT, ASSIGNOR TO GODDARDMANUFACTURING COMPANY.

IMPROVEMENT IN DOOR-CHECKS.

specification forming part of Letters Patent No. 204,643, dated June 4,1878; application filed April 24, 1878.

To all whom it may concern:

Be it known that I, CHARLES S. WHIPPLE, of the city and county of NewLondon, and State of Connecticut, have invented a new and usefulImprovement in Door-Checks, of which the following is a fulldescription:

The improvement relates to that class of door-checks which comprise aT-headed bolt upon the door, engaging with a slotted bar pivoted on thejamb, and more particularly to the manner of pivoting the slotted bar.

It consists substantially of a shouldered thimble passing through a holeat the end of the slotted bar into a hole in the casing opposite theedge of the door and acting as a pivot for the bar to turn upon, andseveral minor devices.

It is described with reference to the accompanyin g drawings, asfollows:

Figure l is a perspective view of the hollow thimble A, showing theshoulder a, and at its inner end two inclined lugs, c c.

Fig. 2 is a sectional view of the same cut through the centerlengthwise. The lugs 00 are prolongations of the inner end of thethimble at two points.

Fig. 3 shows the T-headed bolt C, fitted to move in its bolt-case D, andoperated by a handle, 01, projecting through a slot in the bolt-case.

Fig. 4 shows the slotted bar B, having .mouth f, long slot g, notch h,and projecting The edge of the pivotal hole in the-bar Bis counterboredor beveled on each side of the bar to fit the shoulder a, so that thetwo may be flush whether fitted to right or left hand doors.

Fig. 4 shows the bar B hanging in a recess, K, of the jamb, in theposition it takes when not in use. This recess is opposite the edge ofthe door, and the bar is thus out of sight when the door is closed. Athin plate may, if desired, be fastened to the jamb, to cover the bar Band make a good finish. It will also prevent the parts from workingloose. The bar B has a projection, l, by which it may be raised intoposition without opening the door.

Fig. 5 shows the parts in operation upon a door, the bolt-case D,containing the bolt C, being fastened to the door E, and the bar B beingpivoted by the thimble A to the doorjamb F. The bolt 0 and bar B willthen operate in the ordinary way to allow the door to be opened a shortdistance, the notch h falling onto the head of the bolt C to hold itopen.

The advantages of this style of pivoting the slotted bar are that it isfirm, simple, and easily adjusted.

I claim as my invention- 1. The combination of the thimble A, the bar B,adapted to turn thereon, and the T- headed bolt C, substantially asdescribed.

2. In a door-check composed of the bolt C and bar B, turning upon thethimble A, inclined lugs c c, as a part of such thimble, substantiallyas and for the purpose specified.

Dated at New London this 22d day of April, 1 878.

CHARLES S. WHIPPLE.

Witnesses:

CHAS. C. CAULKINS, THOS. M. WALLER.

